Cam-less Engines

[pdexta]

I saw this being discussed on another forum and found it very interesting. The idea is to use solenoid driven valves instead of gears/belts/pushrods. This would allow valve timing to be completely independent and variable. People have seen decent gains with adjustable cam gears, this would essentially give you the ability to adjust each cam for any given rpm and MAP/MAF reading. It seems to me like it should significantly improve power and efficiency and reduce parasitic losses in the drivetrain. I'm actually a little surprised no one has really figured it out yet.

Guy building small electric valve engines: http://home.cogeco.ca/~davebowesevic/index.html (http://home.cogeco.ca/%7Edavebowesevic/index.html)
Old article w/ BMW testing the idea: http://www.nytimes.com/2003/08/21/technology/circuits/21next.html
Ducati on their testing: http://www.ducati.com/bikes/techcafe.jhtml?part=faq&value=faq#question2
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[VTC_WS6]

I don't recall if it was BMW or Porchse but some German auto maker was tinkering with pneumatic valvetrains some time ago.

[Anthony]

just something to cost twice as much money to fix and twice as many things to go wrong

[stevieg]

i heard about this in school, i think they're using something like that in f1. the cool thing you can rev as high as you want

[pdexta]

just something to cost twice as much money to fix and twice as many things to go wrong

Haha, that is true. Keep making shit more complicated than it really needs to be. I still think it's a cool concept, should really broaden some powerbands I would think. It's like VTAK all the time!!!
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[frank]

I just read about the model plane engine the guy built today.

[02vortec]

i heard about this in school, i think they're using something like that in f1. the cool thing you can rev as high as you want
In theory. Rotating assembly components I assure you will not be able to do this with out some troubles.

[rotodouche]

it does cut down on the amount of rotating mass tho, and parasitic loss on the crank. its a good idea but will have a lot of bugs.

[h0mesk3wLLed]

This is obviously the next stage of the petroleum engine. I can't believe no one has perfected it yet either. No cam shafts, timing chains, upper engine lubrication, incredible space savings, and infinite cam lift and duration adjust ability. further more you could eliminate the cylinder head completely and have just a one peace block ( more strength, less space ) with computer controlled valves that screw into the top.

[Jeffie ON JUICE]

Nigga u just sounded smart with those big white
people words u got me all confused

[frank]

Sadly there has been camless engines since the 50's.

[Hazzvd?b]

This is obviously the next stage of the petroleum engine. I can't believe no one has perfected it yet either. No cam shafts, timing chains, upper engine lubrication, incredible space savings, and infinite cam lift and duration adjust ability. further more you could eliminate the cylinder head completely and have just a one peace block ( more strength, less space ) with computer controlled valves that screw into the top.


stop having your dad post lol

But yeah sick stuff

[h0mesk3wLLed]

stop having your dad post lol

But yeah sick stuff

Yeah that was Dad lol, I was showing him the link about BMW testing it

[Hazzvd?b]

Just have him make an account seems like weed learn some from him.

[h0mesk3wLLed]

Just have him make an account seems like weed learn some from him.

He isn't into the whole internet thing.

He's an old man :rolleyes2:

[scarface007]

just something to cost twice as much money to fix and twice as many things to go wrong

job security !!

im not 100% sure but dont they use solenoid actuated valves in F1 cars ?

[scarface007]

He isn't into the whole internet thing.

He's an old man :rolleyes2:

man if we told your dad that at work he always dropped kicked us .

tell him i said wuz up !

The man is a genious in BMW ,he is also a robot designed to work for BMW that doesnt need sleep or food to turn wrenches . :thumbup:

[h0mesk3wLLed]

man if we told your dad that at work he always dropped kicked us .

tell him i said wuz up !

The man is a genious in BMW ,he is also a robot designed to work for BMW that doesnt need sleep or food to turn wrenches . :thumbup:

Haha so true.

He says hey and good luck and wonders if the teaching is working out?

[scarface007]

Haha so true.

He says hey and good luck and wonders if the teaching is working out.
it pays the bills without having to get dirty , but i miss turning wrenches for BMW , i also miss the shop in Naples. But other tahn that its cool , all the things we teach are pre-historic technology. I cant believe how far ahead BMW is . But 16 hrs overtime every 2 weeks makes it all good:thumbup:.

[h0mesk3wLLed]

it pays the bills without having to get dirty , but i miss turning wrenches for BMW , i also miss the shop in Naples. But other tahn that its cool , all the things we teach are pre-historic technology. I cant believe how far ahead BMW is . But 16 hrs overtime every 2 weeks makes it all good:thumbup:.

Thats good to hear man glad you like it. Makin money :SolidStraight:

[Sick_Rider]

I think alot of the factory backed Motogp bikes last year allready were using this.

[frank]

job security !!

im not 100% sure but dont they use solenoid actuated valves in F1 cars ?

I think alot of the factory backed Motogp bikes last year allready were using this.

In F1 they used a pneumatic valve spring because no one has created a metal on that can handle 20,000rpm well enough. They still have cam shafts to open the valves but then the pneumatic spring slams it closed. I think the newer motogp bikes are running a similar setup.